Question

.......... is the diagrammatic representations of the trophic structure and function at successive trophic levels of an ecosystem.

Answer 1

• An ecological pyramid is a graphical representation designed to show the biomass or bio productivity at each trophic level in a given ecosystem.
• Biomass pyramids show how much biomass (the amount of living or organic matter present in an organism) is present in the organisms at each trophic level, while productivity pyramids show the procreation or turnover in biomass.
• There is also pyramid of numbers which represent the number of organisms in each trophic level.
• They may be upright (e.g. Grassland ecosystem), inverted (parasitic ecosystem) or dumbbell shaped (forest ecosystem).
• Energy pyramids begin with producers on the bottom (such as plants) and proceed through the various trophic levels
  

So the correct option is 'pyramid'.